On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.600 from the axis of rotation of the stool. she is given an angular velocity of 3.00 , after which she pulls the dumbbells in until they are only 0.200 distant from the axis. the woman's moment of inertia about the axis of rotation is 5.00 and may be considered constant. each dumbbell has a mass of 5.00 and may be considered a point mass. neglect friction.1.what is the initial angular momentum of the system? kg*m/s^2 in the direction of the motion2.what is the angular velocity of the system after the dumbbells are pulled in toward the axis? rad/s3.compute the kinetic energy of the system before the dumbbells are pulled in. j4.compute the kinetic energy of the system after the dumbbells are pulled in. j
Answers: 3
Other questions on the subject: Physics
Physics, 22.06.2019 00:10, SKYBLUE1015
The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.
Answers: 2
Physics, 22.06.2019 09:30, xxtonixwilsonxx
True or false graphs must include scales that increase by the same amount
Answers: 1
Physics, 22.06.2019 10:30, laura52677
Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?
Answers: 1
Do you know the correct answer?
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of...
Questions in other subjects:
Health, 26.10.2019 22:43
History, 26.10.2019 22:43
Physics, 26.10.2019 22:43
Social Studies, 26.10.2019 22:43
